Update JS dependencies (#15033)

* Update JS dependencies

- Update all JS dependencies
- For octicons, rename trashcan to trash
- For svgo, migrate to v2 api, output seems to have slightly changed but icons look the same
- For stylelint, update config, fix custom property duplicates
- For monaco, drop legacy Edge support
- For eslint, enable new rules, fix new issues
- For less-loader, remove deprecated import syntax

* update svgo usage in generate-images and rebuild logo.svg with it

web_src/js/features/projects.js

@@ -1,7 +1,7 @@
-const {csrf} = window.config;
+const {csrf, PageIsProjects} = window.config;
 
 export default async function initProject() {
-  if (!window.config || !window.config.PageIsProjects) {
+  if (!PageIsProjects) {
     return;
   }